Dräger Polytron 3000 - ancb.it
Dräger Polytron 3000 - ancb.it
Dräger Polytron 3000 - ancb.it
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Installing the transm<strong>it</strong>ter<br />
How to install the electrical connections<br />
— The electrical wiring may be laid and connected only by a qualified electrician,<br />
who must also comply w<strong>it</strong>h the appropriate regulations – a screened or unscreened<br />
cable (such as LiY, LiYCY) may be used.<br />
— Connection to central device w<strong>it</strong>h at least 2-wire cable, 0.5 to 2.5 mm 2 .<br />
— For currents of 0 to 22 mA, a DC voltage between 12.0 V DC and 30 V DC must<br />
be present at the transm<strong>it</strong>ter.<br />
Installing the 4 to 20 mA current loop on the transm<strong>it</strong>ter<br />
● F<strong>it</strong> 2-wire connecting cable in cable gland, cut to length and strip ends<br />
(approx. 80 mm / 3.15").<br />
● Shorten the shield (if installed) to prevent short-circu<strong>it</strong>ing:<br />
● Connect cable<br />
1 2-pin terminal for <strong>Polytron</strong> <strong>3000</strong> – check polar<strong>it</strong>y (marking in the docking station).<br />
Cut excess wires short or<br />
2 Fasten in 4-pin terminal.<br />
1 Slide connecting terminal back into holder.<br />
● Secure cable in holder.<br />
● Fold up the installation notes and place them in the <strong>Dräger</strong> docking station for future<br />
use during commissioning.<br />
● Ref<strong>it</strong> raincover (protection against dust and splashing water).<br />
Connecting to the central un<strong>it</strong><br />
●<br />
Connect shield to earth of central un<strong>it</strong> (e.g. housing, earth bar, etc.).<br />
1<br />
2<br />
00323758_1.eps<br />
Connecting the <strong>Dräger</strong> <strong>Polytron</strong> <strong>3000</strong> transm<strong>it</strong>ter to a <strong>Dräger</strong> control un<strong>it</strong><br />
(such as Regard, QuadGard, Unigard or <strong>Polytron</strong>):<br />
— Further information about the connection can be found in the instructions for<br />
the <strong>Dräger</strong> control un<strong>it</strong>.<br />
Connecting the <strong>Dräger</strong> <strong>Polytron</strong> <strong>3000</strong> transm<strong>it</strong>ter to control un<strong>it</strong>s w<strong>it</strong>h<br />
a 4 to 20 mA interfaced made by other manufacturers:<br />
— For operation together w<strong>it</strong>h control un<strong>it</strong>s made by other manufacturers, care must<br />
be taken that the voltage at the transm<strong>it</strong>ter does not drop below 12 V. The supply<br />
voltage, the resistance of the cable and the load and the resistance of any installed<br />
safety barrier must be taken into account.<br />
— Further information about the connection can be found in the instructions for the<br />
control un<strong>it</strong> being used.<br />
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